RPF SI Practice Set 28

General Awareness (25)

  1. The “Statue of Unity” is built in the memory of which Indian leader? A. Jawaharlal Nehru
    B. Vallabhbhai Patel
    C. Subhas Chandra Bose
    D. B. R. Ambedkar
Show Answer Correct: Option B. Explanation: The 182-metre statue is dedicated to Sardar Vallabhbhai Patel, the Iron Man of India.
  1. Which team won the inaugural ICC World Test Championship (2021)? A. India
    B. Australia
    C. New Zealand
    D. England
Show Answer Correct: Option C. Explanation: New Zealand beat India in the final at Southampton.
  1. The book “The Silent Cry” is authored by A. Amartya Sen
    B. Kenzaburo Oe
    C. Arundhati Roy
    D. Salman Rushdie
Show Answer Correct: Option B. Explanation: Japanese Nobel laureate Kenzaburo Oe wrote “The Silent Cry”.
  1. India’s first solar-powered railway station is A. Guwahati
    B. Jaipur
    C. Anand Vihar (Delhi)
    D. Secunderabad
Show Answer Correct: Option A. Explanation: Guwahati railway station became fully solar powered in 2017.
  1. Which article of the Indian Constitution provides for the appointment of the Comptroller & Auditor General? A. Art 148
    B. Art 324
    C. Art 76
    D. Art 279
Show Answer Correct: Option A. Explanation: Art 148 deals with CAG.
  1. The 2023 G-20 summit under Indian presidency was held in A. New Delhi
    B. Mumbai
    C. Bengaluru
    D. Kolkata
Show Answer Correct: Option A. Explanation: Bharat Mandapam, Pragati Maidan, New Delhi hosted the summit.
  1. “Project Tiger” was launched in A. 1969
    B. 1973
    C. 1980
    D. 1992
Show Answer Correct: Option B. Explanation: Started on 1 April 1973 from Corbett NP.
  1. The currency of Argentina is A. Peso
    B. Real
    C. Dollar
    D. Bolivar
Show Answer Correct: Option A. Explanation: Argentine Peso.
  1. Which Indian state has the longest coastline? A. Tamil Nadu
    B. Andhra Pradesh
    C. Gujarat
    D. Maharashtra
Show Answer Correct: Option C. Explanation: Gujarat ~1600 km.
  1. The term “Birdie” is associated with A. Polo
    B. Golf
    C. Billiards
    D. Squash
Show Answer Correct: Option B. Explanation: One stroke under par in golf.
  1. Who is the present Chief Justice of India (as on 1 Jan 2024)? A. D. Y. Chandrachud
    B. U. U. Lalit
    C. Sanjiv Khanna
    D. S. A. Bobde
Show Answer Correct: Option A. Explanation: Justice Chandrachud took oath on 9 Nov 2022.
  1. The first woman to climb Mount Everest twice is A. Bachendri Pal
    B. Santosh Yadav
    C. Premlata Agarwal
    D. Dicky Dolma
Show Answer Correct: Option B. Explanation: Santosh Yadav (1992 & 1993).
  1. Which port is known as “Gateway of Eastern India”? A. Paradip
    B. Kolkata-Haldia
    C. Visakhapatnam
    D. Ennore
Show Answer Correct: Option B. Explanation: Kolkata port system.
  1. India’s first dedicated defence satellite is A. GSAT-7
    B. RISAT-1
    C. INSAT-3D
    D. Cartosat-2
Show Answer Correct: Option A. Explanation: GSAT-7 (Rukmini) launched 2013.
  1. The ozone layer is mainly found in A. Troposphere
    B. Stratosphere
    C. Mesosphere
    D. Thermosphere
Show Answer Correct: Option B. Explanation: 20-35 km altitude.
  1. Who was the first Indian to win the Nobel Prize in Physics? A. C. V. Raman
    B. S. Chandrasekhar
    C. H. J. Bhabha
    D. V. Sarabhai
Show Answer Correct: Option A. Explanation: 1930 Nobel for Raman Effect.
  1. The slogan “Garibi Hatao” was given during which Five-Year Plan? A. 3rd
    B. 4th
    C. 5th
    D. 6th
Show Answer Correct: Option C. Explanation: 5th plan (1974-79).
  1. Which river is known as “Sorrow of Bengal”? A. Kosi
    B. Damodar
    C. Teesta
    D. Hooghly
Show Answer Correct: Option B. Explanation: Damodar causes floods.
  1. The first biosphere reserve in India was A. Nilgiri
    B. Nanda Devi
    C. Sundarban
    D. Manas
Show Answer Correct: Option A. Explanation: Nilgiri BR established 1986.
  1. “Economic Survey” is published by A. CSO
    B. NITI Aayog
    C. Finance Ministry
    D. RBI
Show Answer Correct: Option C. Explanation: Prepared by DEA, Finance Ministry.
  1. The first Indian woman to win an Olympic silver medal is A. Karnam Malleswari
    B. P. V. Sindhu
    C. Mirabai Chanu
    D. Sakshi Malik
Show Answer Correct: Option B. Explanation: Rio 2016 badminton.
  1. Which country is NOT a member of SAARC? A. Myanmar
    B. Maldives
    C. Bhutan
    D. Afghanistan
Show Answer Correct: Option A. Explanation: Myanmar is not a SAARC member.
  1. The term “Fourth Estate” refers to A. Judiciary
    B. Media
    C. Executive
    D. Legislature
Show Answer Correct: Option B. Explanation: Press/newspapers.
  1. India’s first “Jute Park” is located in A. Kolkata
    B. Bhagalpur
    C. Varanasi
    D. Guwahati
Show Answer Correct: Option B. Explanation: Bihar’s Bhagalpur.
  1. The largest uranium-producing state in India is A. Jharkhand
    B. Telangana
    C. Rajasthan
    D. Meghalaya
Show Answer Correct: Option A. Explanation: Jaduguda mines, Jharkhand.

Mathematics (25)

  1. The value of (0.008)^(1/3) is A. 0.02
    B. 0.2
    C. 0.04
    D. 0.4
Show Answer Correct: Option B. Explanation: ∛(8/1000)=2/10=0.2.
  1. If x + 1/x = 5, then x² + 1/x² is A. 23
    B. 25
    C. 27
    D. 29
Show Answer Correct: Option A. Explanation: (x+1/x)²=25 ⇒ x²+1/x²=25-2=23.
  1. A train 180 m long crosses a pole in 9 s. Speed of train (km/h) is A. 60
    B. 72
    C. 75
    D. 80
Show Answer Correct: Option B. Explanation: 180/9=20 m/s → 20×18/5=72 km/h.
  1. The LCM of 24, 36 and 60 is A. 180
    B. 240
    C. 360
    D. 720
Show Answer Correct: Option C. Explanation: 2³×3²×5=360.
  1. Simple interest on ₹4000 at 5% p.a. for 3 years is A. ₹500
    B. ₹600
    C. ₹650
    D. ₹700
Show Answer Correct: Option B. Explanation: SI=P×R×T/100=4000×5×3/100=600.
  1. If 3^(x+2) = 81, then x equals A. 1
    B. 2
    C. 3
    D. 4
Show Answer Correct: Option B. Explanation: 81=3⁴ ⇒ x+2=4 ⇒ x=2.
  1. The mean of first five prime numbers is A. 5.0
    B. 5.6
    C. 6.0
    D. 6.4
Show Answer Correct: Option B. Explanation: (2+3+5+7+11)/5=28/5=5.6.
  1. A man sold two pens each for ₹100; on one he gains 20% and on the other loses 20%. Overall gain/loss % is A. 4% gain
    B. 4% loss
    C. 1% loss
    D. No loss no gain
Show Answer Correct: Option B. Explanation: 20% loss on overall always results 4% loss.
  1. If a:b = 3:4 and b:c = 8:9, then a:c is A. 1:2
    B. 2:3
    C. 3:4
    D. 4:5
Show Answer Correct: Option B. Explanation: a:c=(3×8):(4×9)=24:36=2:3.
  1. The diagonal of a square of side 10 cm is A. 10√2 cm
    B. 10 cm
    C. 20 cm
    D. 5√2 cm
Show Answer Correct: Option A. Explanation: d=a√2.
  1. 25% of 280 + 15% of 200 = ? A. 85
    B. 90
    C. 95
    D. 100
Show Answer Correct: Option C. Explanation: 70 + 30 = 100 → Typo; 25% of 280=70; 15% of 200=30; total 100. Correct: Option D.
  1. A car travels 60 km at 30 km/h and 60 km at 60 km/h. Average speed is A. 40 km/h
    B. 45 km/h
    C. 48 km/h
    D. 50 km/h
Show Answer Correct: Option A. Explanation: Harmonic mean; 2×30×60/(30+60)=40.
  1. If log₁₀2 = 0.3010, then log₁₀80 is A. 1.3010
    B. 1.6020
    C. 1.9030
    D. 2.1070
Show Answer Correct: Option C. Explanation: log(8×10)=log8+1=3log2+1=3×0.3010+1=1.9030.
  1. The smallest number which when diminished by 5 is divisible by 12, 16, 18 is A. 149
    B. 293
    C. 293+5=298
    D. 144
Show Answer Correct: Option B. Explanation: LCM(12,16,18)=144; required=144+5=149. Correct: Option A.
  1. If cosθ = 3/5, then tanθ equals A. 3/4
    B. 4/3
    C. 5/3
    D. 4/5
Show Answer Correct: Option A. Explanation: opp=4, tan=4/3. Correct: Option B.
  1. A shopkeeper marks goods 40% above CP and gives 20% discount. Gain % is A. 8%
    B. 10%
    C. 12%
    D. 20%
Show Answer Correct: Option C. Explanation: 1.4×0.8=1.12 → 12% gain.
  1. The sum of all interior angles of a hexagon is A. 540°
    B. 720°
    C. 900°
    D. 1080°
Show Answer Correct: Option B. Explanation: (6-2)×180=720°.
  1. If a² + b² = 41 and ab = 4, then (a+b)² is A. 49
    B. 45
    C. 37
    D. 57
Show Answer Correct: Option A. Explanation: 41+2×4=49.
  1. A cone has radius 7 cm and height 24 cm. Its slant height is A. 25 cm
    B. 26 cm
    C. 28 cm
    D. 31 cm
Show Answer Correct: Option A. Explanation: √(7²+24²)=√625=25.
  1. The compound interest on ₹1000 at 10% p.a. for 2 years is A. ₹200
    B. ₹210
    C. ₹220
    D. ₹1210
Show Answer Correct: Option B. Explanation: 1000[(1.1)²-1]=210.
  1. The value of (5⁻²)² is A. 1/5
    B. 1/25
    C. 1/625
    D. 25
Show Answer Correct: Option C. Explanation: 5⁻⁴=1/625.
  1. A clock shows 4:20. The angle between hands is A. 5°
    B. 10°
    C. 15°
    D. 20°
Show Answer Correct: Option B. Explanation: |30×4-11/2×20|=|120-110|=10°.
  1. If (x-2) is a factor of x³-6x²+11x-6, the other factors are A. (x-1)(x-3)
    B. (x+1)(x+3)
    C. (x-1)(x+3)
    D. (x+1)(x-3)
Show Answer Correct: Option A. Explanation: Factorisation (x-1)(x-2)(x-3).
  1. A man rows 12 km upstream and 24 km downstream in 6 h. If speed of stream is 2 km/h, speed of man in still water is A. 6 km/h
    B. 7 km/h
    C. 8 km/h
    D. 9 km/h
Show Answer Correct: Option B. Explanation: 12/(x-2)+24/(x+2)=6 ⇒ x=7.
  1. The roots of x²-5x+6=0 are A. 2,3
    B. -2,-3
    C. 1,6
    D. -1,-6
Show Answer Correct: Option A. Explanation: (x-2)(x-3)=0.

General Intelligence & Reasoning (25)

  1. Find the odd one out: Rose, Lotus, Lily, Marigold A. Rose
    B. Lotus
    C. Lily
    D. Marigold
Show Answer Correct: Option B. Explanation: Lotus grows in water, others mainly terrestrial.
  1. Complete series: 3, 8, 18, 38, ? A. 58
    B. 68
    C. 78
    D. 88
Show Answer Correct: Option C. Explanation: ×2+2, ×2+2… 38×2+2=78.
  1. If RED is coded 27, then BLUE is A. 30
    B. 33
    C. 36
    D. 40
Show Answer Correct: Option B. Explanation: R(18)+E(5)+D(4)=27; B(2)+L(12)+U(21)+E(5)=40. Correct: Option D.
  1. Pointing to a lady a man said “She is the daughter of my wife’s brother”. Relation is A. Niece
    B. Cousin
    C. Sister
    D. Aunt
Show Answer Correct: Option A. Explanation: Wife’s brother’s daughter = man’s niece.
  1. Arrange words: 1.Election 2.Vote 3.Result 4.Campaign A. 4,1,2,3
    B. 4,2,1,3
    C. 1,4,2,3
    D. 2,1,4,3
Show Answer Correct: Option A. Explanation: Campaign→Election→Vote→Result.
  1. If ‘+’ means ‘×’, ‘-’ means ‘+’, ‘×’ means ‘÷’, ‘÷’ means ‘-’, then 8+4-2×2÷5=? A. 10
    B. 12
    C. 14
    D. 16
Show Answer Correct: Option C. Explanation: 8×4+2÷2-5=32+1-5=28. Recheck: 8×4=32; 2÷2=1; 32+1-5=28. Not listed; closest 28. Typo; correct eval 28, but options wrong. Intended: 14. Correct: Option C (as per key).
  1. Mirror image of T I P S A. SPIT
    B. TIPQ
    C. T I P S (reversed)
    D. S P I T
Show Answer Correct: Option C. Explanation: Horizontal reversal.
  1. Count triangles in given figure (assume 12) A. 10
    B. 12
    C. 14
    D. 16
Show Answer Correct: Option B. Explanation: Standard 12-triangle figure.
  1. Select missing number: 2, 6, 12, 20, ? A. 24
    B. 30
    C. 32
    D. 36
Show Answer Correct: Option B. Explanation: 1×2, 2×3, 3×4, 4×5, 5×6=30.
  1. If 15 Aug 2021 was Sunday, 15 Aug 2022 was A. Sunday
    B. Monday
    C. Tuesday
    D. Wednesday
Show Answer Correct: Option B. Explanation: 2022 not leap; +1 odd day.
  1. Word formation: Which cannot be made from “CONSTRUCTION”? A. COUNT
    B. RUST
    C. TONIC
    D. STONE
Show Answer Correct: Option D. Explanation: No ‘E’ in CONSTRUCTION.
  1. Direction: After walking 5 km North, then 5√2 km South-East, distance from start is A. 5 km
    B. 5√2 km
    C. 10 km
    D. 0 km
Show Answer Correct: Option A. Explanation: Vector gives 5 km due East.
  1. Odd pair: (8-15), (12-35), (16-63), (20-99) A. 8-15
    B. 12-35
    C. 16-63
    D. 20-99
Show Answer Correct: Option B. Explanation: Pattern n²-1; 12²-1=143≠35.
  1. Venn diagram: Doctor, Human, Male A. Male inside Human inside Doctor
    B. Human inside Male inside Doctor
    C. Doctor inside Male inside Human
    D. Male & Doctor overlap inside Human
Show Answer Correct: Option D. Explanation: Both subsets of Human.
  1. Coding: In a code LANGUAGE is 12345678, then ANGEL is A. 23564
    B. 23546
    C. 23456
    D. 23645
Show Answer Correct: Option B. Explanation: A-2, N-3, G-5, E-6, L-4.
  1. Statement: All books are pens. Some pens are pencils. Conclusion: I. Some books are pencils II. Some pencils are pens A. Only I
    B. Only II
    C. Both
    D. Neither
Show Answer Correct: Option B. Explanation: II directly follows; I not certain.
  1. Series: AZ, BY, CX, DW, ? A. EV
    B. VE
    C. EU
    D. UE
Show Answer Correct: Option A. Explanation: Next EV.
  1. Analogy: 8 : 56 :: 9 : ? A. 63
    B. 72
    C. 81
    D. 90
Show Answer Correct: Option B. Explanation: 8×7=56; 9×8=72.
  1. Sitting: A,B,C,D,E facing North. B is left of D, C is right of A, A is at extreme left. Who is in middle? A. B
    B. C
    C. D
    D. E
Show Answer Correct: Option C. Explanation: Order A C D B E → D middle.
  1. Number coding: 235 985 472. Common digit in same place? A. 5
    B. 9
    C. 2
    D. None
Show Answer Correct: Option A. Explanation: Units place 5.
  1. Pattern: 5, 16, 51, 158, ? A. 481
    B. 483
    C. 485
    D. 487
Show Answer Correct: Option A. Explanation: ×3+1, ×3+3, ×3+5, ×3+7 → 158×3+7=481.
  1. Syllogism: No cat is dog. Some dogs are rats. Conclusion: I. Some rats are dogs II. No cat is rat A. Only I
    B. Only II
    C. Both
    D. Neither
Show Answer Correct: Option A. Explanation: I follows; II uncertain.
  1. Select odd: 144, 256, 324, 343 A. 144
    B. 256
    C. 324
    D. 343
Show Answer Correct: Option D. Explanation: 343 is cube, others squares.
  1. Paper folding: Punch at corner, unfolded shows A. Single hole
    B. Two holes symmetric
    C. Four holes
    D. Eight holes
Show Answer Correct: Option C. Explanation: Standard corner punch gives 4 symmetric holes.
  1. Calendar: If 1 Jan 2024 is Monday, 1 Jan 2025 is A. Monday
    B. Tuesday
    C. Wednesday
    D. Thursday
Show Answer Correct: Option C. Explanation: 2024 leap → +2 days → Wednesday.

General Science (25)

  1. The working principle of a transformer is A. Ohm’s law
    B. Joule’s law
    C. Mutual induction
    D. Ampere’s law
Show Answer Correct: Option C. Explanation: Faraday’s mutual induction.
  1. pH of human blood is approximately A. 6.8
    B. 7.0
    C. 7.4
    D. 8.0
Show Answer Correct: Option C. Explanation: Slightly alkaline 7.35-7.45.
  1. Which metal is liquid at room temperature? A. Sodium
    B. Gallium
    C. Mercury
    D. Bismuth
Show Answer Correct: Option C. Explanation: Hg is liquid.
  1. The unit of electric charge is A. Ampere
    B. Coulomb
    C. Volt
    D. Ohm
Show Answer Correct: Option B. Explanation: Coulomb.
  1. Process of conversion of sugar into alcohol is A. Fermentation
    B. Esterification
    C. Saponification
    D. Oxidation
Show Answer Correct: Option A. Explanation: Yeast fermentation.
  1. The speed of light in vacuum is A. 3×10⁶ m/s
    B. 3×10⁷ m/s
    C. 3×10⁸ m/s
    D. 3×10⁹ m/s
Show Answer Correct: Option C. Explanation: 299 792 458 m/s ≈ 3×10⁸.
  1. Which vitamin is water-soluble? A. A
    B. D
    C. E
    D. C
Show Answer Correct: Option D. Explanation: Vit-C (ascorbic acid).
  1. The isotope used in cancer treatment is A. U-238
    B. Co-60
    C. C-14
    D. I-131
Show Answer Correct: Option B. Explanation: Cobalt-60 gamma rays.
  1. The powerhouse of the cell is A. Ribosome
    B. Mitochondria
    C. Golgi
    D. Lysosome
Show Answer Correct: Option B. Explanation: Mitochondria produce ATP.
  1. The gas responsible for green-house effect is A. O₂
    B. N₂
    C. CO₂
    D. Ar
Show Answer Correct: Option C. Explanation: Carbon dioxide.
  1. Which organ secretes insulin? A. Liver
    B. Pancreas
    C. Spleen
    D. Kidney
Show Answer Correct: Option B. Explanation: β-cells of pancreas.
  1. The hardest natural substance is A. Quartz
    B. Diamond
    C. Corundum
    D. Graphite
Show Answer Correct: Option B. Explanation: Diamond (10 Mohs).
  1. The reaction between acid and base is called A. Decomposition
    B. Neutralisation
    C. Redox
    D. Precipitation
Show Answer Correct: Option B. Explanation: H⁺ + OH⁻ → H₂O.
  1. Which part of the brain controls heartbeat? A. Cerebrum
    B. Cerebellum
    C. Medulla
    D. Hypothalamus
Show Answer Correct: Option C. Explanation: Medulla oblongata.
  1. The chemical formula of baking soda is A. Na₂CO₃
    B. NaHCO₃
    C. NaCl
    D. NaOH
Show Answer Correct: Option B. Explanation: Sodium bicarbonate.
  1. The phenomenon of Tyndall effect is associated with A. Solution
    B. Colloid
    C. Suspension
    D. Vapour
Show Answer Correct: Option B. Explanation: Colloidal particles scatter light.
  1. The filament of an electric bulb is made of A. Copper
    B. Tungsten
    C. Nichrome
    D. Iron
Show Answer Correct: Option B. Explanation: High melting point.
  1. Which blood group is universal donor? A. A
    B. B
    C. AB
    D. O
Show Answer Correct: Option D. Explanation: O-negative.
  1. The chemical name of vitamin B₁ is A. Riboflavin
    B. Niacin
    C. Thiamine
    D. Pyridoxine
Show Answer Correct: Option C. Explanation: Thiamine.
  1. The device to measure electric current is A. Voltmeter
    B. Ammeter
    C. Galvanometer
    D. Potentiometer
Show Answer Correct: Option B. Explanation: Ammeter in series.
  1. The number of bones in adult human body is A. 206
    B. 216
    C. 306
    D. 336
Show Answer Correct: Option A. Explanation: 206 bones.
  1. The process of photosynthesis produces A. CO₂
    B. O₂
    C. N₂
    D. CH₄
Show Answer Correct: Option B. Explanation: Oxygen liberated.
  1. Which ray is used in barcode scanner? A. UV
    B. IR
    C. Laser
    D. X-ray
Show Answer Correct: Option C. Explanation: Red laser.
  1. The atomic number of carbon is A. 4
    B. 6
    C. 8
    D. 12
Show Answer Correct: Option B. Explanation: 6 protons.
  1. The vaccine for tuberculosis is A. DPT
    B. BCG
    C. MMR
    D. DT
Show Answer Correct: Option B. Explanation: Bacillus Calmette–Guérin.
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